Implement sending E2EE notification from the client
Summary: This differential implements sending e2ee notifications to clients when reducers return notifs message datas.
Test Plan:
- Apply this patch: https://gist.github.com/marcinwasowicz/c9944e2ed8ed7bbd269017aff7a9a336
- Send messages back and forth between Android and iOS devices. Ensure each message comes with two duplicate notifications. One is from the keyserver and the other is from the TB.
Reviewers: kamil, tomek, bartek
Reviewed By: kamil, tomek
Subscribers: ashoat
Differential Revision: https://phab.comm.dev/D12882